CN102649003B - Based on the constant current stimulation circuit that EMG feedback stimulates - Google Patents
Based on the constant current stimulation circuit that EMG feedback stimulates Download PDFInfo
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- CN102649003B CN102649003B CN201210114706.1A CN201210114706A CN102649003B CN 102649003 B CN102649003 B CN 102649003B CN 201210114706 A CN201210114706 A CN 201210114706A CN 102649003 B CN102649003 B CN 102649003B
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Abstract
The invention provides a kind of constant current stimulation circuit stimulated based on EMG feedback, comprise input circuit, constant-current source circuit, feedback network, impedance matching network and load, wherein, described input circuit is connected to described constant-current source circuit, described constant-current source circuit is connected to described load, the described constant-current source circuit connected successively, load and feedback network form feedback circuit, and described impedance matching network connects described constant-current source circuit, load and feedback network respectively.Constant current stimulation circuit provided by the invention, control when achieving the high-precision real to output boost pulse, substantially reduce the number of times of engineering staff's service equipment, improve reliability and the therapeutic effect of product, reduce human cost, the neuromuscular rehabilitation instrument stimulated based on EMG feedback can being applied to, thus making neuromuscular rehabilitation instrument export high-precision boost pulse, treating needing the muscle of rehabilitation.
Description
Technical field
The present invention relates to Medical Instruments, particularly, relate to the constant current stimulation circuit stimulated based on EMG feedback.
Background technology
The electro-physiological signals that electromyographic signal (Electromyogram, EMG) produces when being exactly muscular movement.Surface electromyogram signal (Surface Electromyogram, SEMG) refers to the electromyographic signal collected at skin surface, is human body superficial muscular and neuromotor synthesis result.Its main feature has: one is that signal amplitude is little, usually at tens microvolts; Two is that signal frequency is positioned at low-frequency range (10Hz-500Hz).Usually, time domain and frequency domain method can be utilized to analyze the feature of electromyographic signal, utilize the electromyographic signal feature analyzed and obtain, the various research relevant to myoelectricity can be launched, as electromyographic signal can be good at reflection human nerve muscle function state.Therefore, clinically, by myoelectricity, neuromuscular function state is diagnosed, and in conjunction with galvanism, the muscle certain or completely certain to funtion part is treated, to reach the object of muscular recuperation.The deficiencies in the prior art part is that the precision of output boost pulse is not high enough.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of constant current stimulation circuit stimulated based on EMG feedback.
According to an aspect of the present invention, a kind of constant current stimulation circuit stimulated based on EMG feedback is provided, comprise input circuit, constant-current source circuit, feedback network, impedance matching network and load, wherein, described input circuit is connected to described constant-current source circuit, described constant-current source circuit is connected to described load, the described constant-current source circuit connected successively, load and feedback network form feedback circuit, and described impedance matching network connects described constant-current source circuit, load and feedback network respectively.
Preferably, described input circuit comprises microprocessor.
Preferably, described load comprises stimulation probe.
Preferably, described constant-current source circuit comprises amplifier and metal-oxide-semiconductor, and wherein, an input of described amplifier connects described input circuit, another input of described amplifier connects described impedance matching network, and the outfan of described amplifier connects the grid of described metal-oxide-semiconductor.
Constant current stimulation circuit provided by the invention, control when achieving the high-precision real to output boost pulse, substantially reduce the number of times of engineering staff's service equipment, improve reliability and the therapeutic effect of product, reduce human cost, the neuromuscular rehabilitation instrument stimulated based on EMG feedback can being applied to, thus making neuromuscular rehabilitation instrument export high-precision boost pulse, treating needing the muscle of rehabilitation.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 illustrates according to the constant current stimulation circuit structure chart stimulated based on EMG feedback of the present invention;
Fig. 2 illustrates according to the constant current stimulation circuit principle schematic stimulated based on EMG feedback of the present invention.
Detailed description of the invention
Fig. 1 illustrates according to the constant current stimulation circuit structure chart stimulated based on EMG feedback of the present invention.Particularly, according to the constant current stimulation circuit stimulated based on EMG feedback provided by the invention, comprise input circuit 1, constant-current source circuit 2, feedback network 3, impedance matching network 4 and load 5, wherein, described input circuit 1 is connected to described constant-current source circuit 2, described constant-current source circuit 2 is connected to described load 5, the described constant-current source circuit 2 connected successively, load 5 and feedback network 3 form feedback circuit, and described impedance matching network 4 connects described constant-current source circuit 2, load 5 and feedback network 3 respectively.
More specifically, described input circuit 1 preferably includes microprocessor, and described load 5 comprises stimulation probe.Further, Fig. 2 illustrates according to the constant current stimulation circuit principle schematic stimulated based on EMG feedback of the present invention, wherein, as shown in Figure 2, described constant-current source circuit preferably includes amplifier and metal-oxide-semiconductor, and wherein, an input of described amplifier connects described input circuit, another input of described amplifier connects described impedance matching network, and the outfan of described amplifier connects the grid of described metal-oxide-semiconductor.
Further, as shown in Figure 2 whether, the core of described constant current stimulation circuit is described impedance matching network 4, which determine system and can normally work; The type selecting of device will meet the requirements (particularly the variable resistance district of metal-oxide-semiconductor is greater than the dynamic range required by system); Described constant-current source circuit 1 exports required constant current under the control of the direct current signal of input.
The computing formula of constant current:
I＝Uin/R0
I in formula represents that required electric current exports; Uin represents controlled input direct voltage; R0 is in order to set with constant current.
Operation principle of the present invention:
Input controlled direct current signal Uin (its amplitude, frequency etc. all can be controlled by MCU), export the boost pulse into certain frequency, certain pulsewidth, constant current.Input direct-current signal through constant current stimulation circuit role of network in certain loads, thus load two ends produce need pulse.Described constant-current source circuit preferably adopts amplifier to be combined with metal-oxide-semiconductor and realizes, when input signal is constant, and the conducting degree of feedback signal controllable metal-oxide-semiconductor, thus reach the effect of constant current; Impedance matching network according to the characteristics design of load (load characteristic is different, and corresponding matching network is also just different), need can not reaches requirement as calculated device inaccurate or used, circuit all can be caused to fall flat.
Due to amplifier " empty short " characteristic, the voltage being added in R0 two ends is also Uin, and the electric current namely flowing through load is also I; As load changes, the negative feedback in circuit can make the output voltage of amplifier that corresponding change also occurs, thus the on state characteristic of metal-oxide-semiconductor is changed, and then offsets the change of load.Wherein, for avoiding circuit to shake, impedance matching network must proof load be resistive, otherwise circuit may operation irregularity.And the impedance matching network of circuit designs according to specific load, namely load is different, and the impedance matching network corresponding to it is also different.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (1)
1. the constant current stimulation circuit stimulated based on EMG feedback, it is characterized in that, comprise input circuit, constant-current source circuit, feedback network, impedance matching network and load, wherein, described input circuit is connected to described constant-current source circuit, described constant-current source circuit is connected to described load, and the described constant-current source circuit connected successively, load and feedback network form feedback circuit, and described impedance matching network connects described constant-current source circuit, load and feedback network respectively;
Described input circuit comprises microprocessor;
Described load comprises stimulation probe;
Described constant-current source circuit comprises amplifier and metal-oxide-semiconductor, wherein, and of described amplifier
Input connects described input circuit, and another input of described amplifier connects described impedance
Matching network, the outfan of described amplifier connects the grid of described metal-oxide-semiconductor;
Feedback network is used for when input signal is constant, the conducting degree of regulation and control metal-oxide-semiconductor, thus reaches the effect of constant current;
It is resistive that impedance matching network is used for proof load, shakes to avoid circuit.
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| CN201210114706.1A CN102649003B (en) | 2012-04-18 | 2012-04-18 | Based on the constant current stimulation circuit that EMG feedback stimulates |
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| CN201210114706.1A CN102649003B (en) | 2012-04-18 | 2012-04-18 | Based on the constant current stimulation circuit that EMG feedback stimulates |
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| CN102649003A CN102649003A (en) | 2012-08-29 |
| CN102649003B true CN102649003B (en) | 2015-08-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102940933A (en) * | 2012-11-26 | 2013-02-27 | 南京伟思医疗科技有限责任公司 | Intelligent electrical stimulation circuit device |
| WO2020154906A1 (en) * | 2019-01-29 | 2020-08-06 | 深圳市科曼医疗设备有限公司 | Constant-current stimulation circuit with dynamic voltage adjustment |
| CN109771817A (en) * | 2019-01-29 | 2019-05-21 | 深圳市科曼医疗设备有限公司 | A kind of constant current stimulation circuit of Dynamic voltage scaling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215614A (en) * | 1998-12-04 | 1999-05-05 | 清华大学 | Functional neuromyo-electric signal identification and stimulation apparatus |
| CN101185788A (en) * | 2007-11-22 | 2008-05-28 | 上海市第一人民医院 | Artificial facial nerve prosthesis with facial nerve substituting function |
| CN101569778A (en) * | 2009-03-10 | 2009-11-04 | 深圳先进技术研究院 | Biofeedback simulation system and biofeedback simulation method |
| CN201537319U (en) * | 2009-11-10 | 2010-08-04 | 上海理工大学 | Myoelectric feedback electric stimulation instrument |
| CN102139139A (en) * | 2011-01-13 | 2011-08-03 | 中国医学科学院生物医学工程研究所 | Myoelectric feedback control electric stimulation device and control method thereof |
| CN102247653A (en) * | 2010-05-19 | 2011-11-23 | 北京瑞新康达医疗科技有限公司 | Realization method for controlling defibrillation waveforms efficiently and flexibly |
-
2012
- 2012-04-18 CN CN201210114706.1A patent/CN102649003B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1215614A (en) * | 1998-12-04 | 1999-05-05 | 清华大学 | Functional neuromyo-electric signal identification and stimulation apparatus |
| CN101185788A (en) * | 2007-11-22 | 2008-05-28 | 上海市第一人民医院 | Artificial facial nerve prosthesis with facial nerve substituting function |
| CN101569778A (en) * | 2009-03-10 | 2009-11-04 | 深圳先进技术研究院 | Biofeedback simulation system and biofeedback simulation method |
| CN201537319U (en) * | 2009-11-10 | 2010-08-04 | 上海理工大学 | Myoelectric feedback electric stimulation instrument |
| CN102247653A (en) * | 2010-05-19 | 2011-11-23 | 北京瑞新康达医疗科技有限公司 | Realization method for controlling defibrillation waveforms efficiently and flexibly |
| CN102139139A (en) * | 2011-01-13 | 2011-08-03 | 中国医学科学院生物医学工程研究所 | Myoelectric feedback control electric stimulation device and control method thereof |
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Inventor after: Li Long Inventor after: Wang Xuefeng Inventor after: Bai Chunxue Inventor after: Ren Chuancheng Inventor after: Hu Jiahua Inventor after: Li Huihua Inventor before: Li Long Inventor before: Li Huihua Inventor before: Hu Jiahua Inventor before: Lv Zhuzhu |
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Free format text: CORRECT: INVENTOR; FROM: LI LONG LI HUIHUA HU JIAHUA LV ZHUZHU TO: LI LONG WANG XUEFENG BAI CHUNXUEREN CHUANCHENG HU JIAHUA LI HUIHUA |
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Address after: 200245 No. 68, Nansha Road, Shanghai, Minhang District Patentee after: SHANGHAI NUOCHENG ELECTRIC CO., LTD. Address before: 200240 Shanghai city Minhang District Jianchuan Road No. 940 Building No. 1 5 floor Patentee before: Shanghai Nuocheng Electric Co., Ltd. |